DPIs are designed to deliver medication directly to the lungs by inhaling a dry powder formulation. The medication is typically stored in a capsule or blister, and the inhaler device pierces or opens the capsule to release the powder. The patient inhales deeply and rapidly, which generates the airflow needed to disperse the powder into fine particles that reach the lower respiratory tract. This method of delivery ensures a rapid onset of action and minimizes systemic exposure, thereby reducing potential adverse effects.
